Moving picture machine



March 15, 1932. D; E GILMORE 1,849,668

MOVING PICTURE MACHINE Filed May 20, 1929 5 Sheets-Sheet l March 15,1932. D G1LMORE 1,84Sfi6g MOVING PICTURE MACHINE Filed May 20, 19529 5Sheets-Sheet 2 Mare}! 1932- D. E. GILMORE 1,849,66

MOVING PICTURE MACHINE Filed May 20, 1929 5 Sheets-Sheet 3 a V 756 IE417a v it? E: 61' 711 are MOVING PICTURE MACHINE Filed May 20, 1929 5Sheets-Sheet 4 QVnUan 237% March 15,1932. D. E. GILMORE MOVING PICTUREMACHINE Filed May 20, 1929 5 sheets sheet 5 Patented Mar. 1 1932 UNITEDSTATES PATENT OFFICE DAVID E. GILMORE, OF CHICAGO, ILLINOIS, ABSIGNOB TOHELIOS CORPORATION, OF

. CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE MOVING PICTURE MACHINEApplication filed May 20,

My invention relates generally to moving picture machines and has to domore particularly with devices for projecting upon a screen, or thelike, a rapid succession of images from a moving picture film.

Recent developments in the combination of moving pictures and sound,that is, so-called talking-moving pictures, have made severe the demandupon moving picture projection apparatus, and it is a general object ofmy invention to provide apparatus which will be especially adapted foruse in the projection of talking or sound pictures.

A. particular object of my invention is to provide projection apparatuswhich will maintain the film substantially taut at all times where it isassociated with the light, so that a clear and sharp image will beprojected at all times without fuzziness, indefiniteness, or portionsout of focus.

A. further object is to provide driving mechanismfor apparatus of theclass referred to which will be so arranged as to operate with a minimumof wear and noise.

A still further object is to provide means for adjusting relative toeach other, the cams which provide intermittent movement to the film inorder that such cams and the sprocket drums carrying the film andactuated by the cams may be 1n perfect synchronization.

Still another object is to provide such a device in whichtheintermittent driving unit may be quickly and easily replaced, as a unitor repaired.

Another object is to provide means for gauging the length of filmbetween the light and sound apertures so as to maintain a fixed lengthof film between such points, in order that the sound and pictures may bestarted and maintained in perfect synchronization.

Still a further ob ect is to provide a new and improved star wheel formechanism of the class referred to.

Still another object is to provide means for masking a sound device onJ. film at the aperture plate, without blurring the edge of the film.

Still a further object is: to provide a new and improved framing devicewhereby all machines may be framed similarly and a 1929. Serial no:364,564.

double image of the picture thus prevented. Many other objects andadvantages of the construction herein shown and described will beobvious to those skilled in'the art from the disclosure herein given.

To this end my invention consists in the novel construction, arrangementand com-- bination of parts herein shown and described,

and more particularly pointed out in the claims.

In the drawings, wherein like reference Fig. 3 .is a sectional Viewtaken substantially on the line 33 of Fig. 2;

Fig. 4 is a sectional view taken substantially on the line 44 of Fig.3;

Fig. 5 is a sectional view taken substantially on the line. 55 of Fig.3;

Fig. 6 is a fragmentary detailed elevational view of a pair of spoolsforming a feature of my invention;

Fig. 7 is a sectional view taken substantially on the line 7-7 of Fig.2;

Fig. 8 is a sectional view taken substantially on the line 8-8 of Fig.,7

Fig. 9 is a fragmentary elevational view showing means for adjusting themain housing relative to the power transmitting mechanism;

Fig. 10 is a detailed plan elevation on an enlarged scale of a starwheel comprising a feature of the invention;

Fig. 11 is a sectional view taken on the line 11- 11 of Fig. 10;

means for adjusting the shutter taken on line 1212 of Fig. 7 and Fig. 13is a sectional view of a sound maskparatus embodying my invention, andwhich may be referred to as the main housing. This casing comprises atop wall 11, a bottom wall 12, a front wall 13, a rear wall 14 having apanel 14a hinged as at 14?) (Fig. 4), a side wall 15 hinged to the frontwall as at 15a (Fig. 4), and a side wall 16. The casing 10 may besubstantially similar to that of the apparatus described and claimed inthe patent to Proska No. 1,748,779 issued Mar. 11, 1930. Arranged on thetop wall 11 of the casing is a suitable bracket for supporting a reel ofmoving picture film, this bracket carrying a plurality of rotatablyjournaled rollers 21 arranged in pairs for guiding the film from a reel(not shown) into the casing 10, the top wall 11 being apertu'red as at22 for the passage of film.

Preferably formed integrally with the front wall 13 is a cylindricalboss 25 which is adapted to house a plurality of lenses (not shown) in amanner well known in the art, and a focusing lever 26 is provided formoving the lenses within the casing, in a well known manner.

Hingedly mounted on the wall 14 of the casing is a door 27 and pivotallymounted in a bracket 28 secured to the outer surface of the door 27 is alatch member 30. This latch member is yieldingly urged by a spring 31into a position where it will engage a keeper 33 formed on the wall 14.It will be readily apparent that by depressing the end of the latchmember 30, the door 27 may be swung outwardly on its hinges.

Secured to the wall 16 of the casing 10 adjacent the lower portion.thereof and insetwith respect thereto, is a panel 35, and secured to thepanel 35 1s a gear box.37, a reenforcing or vibration-reducing member 38being interposed between the gear box and the panel 35, The gear box hasa pair of lateral flanges 34 having arcuate slots 36 through whichextend bolts 39 securing the box 37 to the casing 10 (see Fig. 9). Amain drive shaft leading from any suitable source of power (not shown),such as an electric motoror the like, transmits motion to the gearboxand thence to the apparatus housed-within the casing 10. The gear box37 comprises a plurality of walls connected together with fluid-tightjoints so that the mechanism housed within this gear box may besubstantially submerged in oil, or bther lubricant and maycontinuallyoperate under such conditions in order that noise and wearmay be reducedto a minimum.

' Mounted'on the end of the driveshaft 40 is a worm wheel 42 whichmeslies with a worm 43 carried byia shaft 45. It may be noted here. thatthe casing 10 and parts carried thereby may be angularly "adjusted aboutthe tween casing 10 and the gear box 37 through the arcuate slots 36. Asseen best in'Fig. 8,

the shaft 45 is preferably formed in two sections so as to facilitateassembling and demounting of the apparatus and has secured to its otherend, a bevelgear 47. The gear 47 meshes-with a similar bevel gear 48mounted on a substantially vertical shaft 50, which will-be called themain shaft. A suitable fluid-tight casing 52 isprovided adjacent thelower portion of the casing 10 for housing various portions of thedriving mechanism, in order that such mechanism-may be submerged inoil'or other lubricant while in motion so as to reduce noise and wear. Asuitable fluidtight bearing member 53, journals the shaft 50 in theupper wall of the casing'52. This shaft, as best seen in Fig. 3, ispreferably formed in a plurality of sections, connected by a coupling54, in order that the parts above the casing 52 may be removed as aunit, if desired.

Secured to the shaft 50 adjacent the lower portion thereof is a gear 55'meshing with a similar gear 56 mounted on an idler shaft 57, this idlershaft being carried by a bracket 58 slidable on a pin 58' and sojournaled in a suitable bearing member provided in the bottom wall ofthe casing 52 as to be vertically slidable. Secured to the shaft 57 is aspiral gear 59meshing with a similar gear 60 mounted on a shaft 61.parallel to the shaft 57 and 50 and is also journale in the casing 52carries a gear 62 which meshes with a similar gear 63 secured to a shaft65. The shaft 65 is also parallel The shaft 61 which is to the shaft 50and is rotatably journaled at similar gear 67 secured to one end of ashaft 68. The shaft 68 is rotatably journaled in a bearing member 69projecting from and preferably integral with the wall 13 of the casingand this shaft carries a disc shutter 7 0', which may be of an suitabletype, well known in the art, or o the type disclosed in the copendingapplication above referred to.

Secured to the shaft 65' is a governor 72, which may be of any suitabletype for controlling ,the rotative speed of the shutter 70. If desired,the governor 72 may be operatively connected to suitable means indicatedat 73 (Fig. 1) for interposing a fire screen between the source of lightand the film which is being fed through the machine when the speedofsuch film is for any reason reduced below a predetermined minimum. Suchapparatus is disclosed in the copending appli- 6 one through a verticalpartition member 78 and carries on one end thereof, a sheave or pulley79 (Fig. 2) which is ada ted to operate, by means of a belt, or the lie, a rewinding reel (not shown). At its oppositeend, the shaft 77carries a take-up sprocket drum 81. A blade 83 (Fig. 1) pivotallysecured to partition member 78 has an edge normall hearing against thesprocket wheel 81 for t e purpose of peeling off the end of a strip offilm which may stick to the drum. A spring (not shown) may be providedfor resiliently urging the blade 83 into contact with the drum 81.Cooperating with the drum 81 is a grooved roller 85 rotatably mounted onan arm 87 (Fig. 2) which is pivotally mounted on the partition member 78 as indicated at 88. A. stop 89 is formed on the arm 87 opposite thepivot 88 for limiting its movement in one direction and a coiled spring90 normally bears against the arm 87 for retaining the rollers 85 incooperative relationship to the drum 81, so as to'bear against a stripof film passing between the rollers 85 and drum 81. A screw 92 threadedinto the wall 14 of the casing 10 serves as an adjustable stop forlimiting the rotation of the arm 87 about its pivot away from drum 81.An arm. 93 is pivotally secured to the partition member 17 8 fixed to adefinite length as accurately as possible, in order to obtain as nearlyperfect synchronization of sound and picture as possible. By rotatingthe arm 87 to the left (Fig. 1) until it abuts against the screw 92 andthe film then arranged taut between the rollers 85 and the sprocket drum81, obviously a loop 97 of film may be formed between the pictureprojecting apparatus to be described and t e take-ofi sprocket 81,

which loop is absolutely fixed in length. It

is apparent that the length of the loop may be adjusted within certainlimits by rotation of the screw 92, which. serves as a stop for the arm87. Of course, the roller 85 also cooperates with the sprocket drum 81for retaining the film thereon when the machine is operating.Furthermore, by rotation of the arm 93, carrying the guide rollers and95', about the pivot 94, the length of film between the take-01fsprocket 81and the sound reproducing mechanism (not shown) may be variedwithin certain limitsf However, once the screw 92 and arm 93 have beenadjusted, the length of film between the light projecting mechanism andthe sound reproducing mechanism may be absolutely fixe (Fig. 2) for theintroduction of oil.

Rotatably journaled iii the rear wall 14 of the casing 10 is a shaft 100carrylng at one end thereof outside of the casing 10 a manipulating knob101. This shaft 100 ex arm formed on the upper extremity of the shaft57. (See Figs. 7 and 12.)

It will be obvious that rotation of the knob 101 by an operator resultsin vertically moving the shaft 57, together with the spiral gear 59carried thereby, either in an up or down direction, according to thedirection of rotation of the knob 101. Such longitudinal movement of thegear 59 will ,result in rotation of the spiral gear 60 meshingtherewith, and such rotation of the gear 60 will be transmitted by themechanism best seen in Fig. 3 to the shutter 70. By this means theshutter may be adjusted so as to be in perfect synchronism with thefilm.

ferring now to Fig. 3, it will be seen that the shaft 50, which may becalled the main shaft, has preferably formed integrally on its upper endan enlarged portion her 118 secured in the top wall 11 of casing 10, asby a screw-formed end 119. The shaft 50 extends through a longitudinalsleeve 120 having a laterally extending annular flange having a keyway116 thereinfand rotatably engaging the portion 115 is a bearing mem- 121at the lower end thereof which is seated in a suitable cup-like bearingmember 122 journaling the shaft 50 and disposed in a' casing 123. Thecasing 123 is closed at the top thereof by means of asuitable cap-likemember 124 which has a substantially central opening 125 therein.Annular centering devices 126 substantially similar to the centeringarrangement disclosed on the copending application above referred to areprovided'in the upper portion of the cup-like member 124. Thecasing123substantially incloses the film feeding mechanism, to be described,and has'in a side wall thereof an aperture 127 closed' by a screw plug128 Disposed in the cuplike bearing member 122 and seated on the annularflange 121 formed on the lowerportion of the sleeve 120 is a ballbearing 132. ,Seated above the upper race of the ball bearing 132 andjournaling the sleeve 120 is a sleeve like bearing member 135, whichengages adjacent its upper extremity the lowerrace of a ball bearing136. The ball bearing 136 is arranged with its upper race secured to thecaplike member 124 and with its lower race disposed in a worm 138.

The worm 138 is rotatably mounted on the sleeve 135 and-is provided witha key 139 extending through the sleeve 135 and-slidably engaging thekeyway 116 in the enlarged portion 115 of the shaft 50. The worm 138"art that each rotation of the cam 140 produces a rotation of 90 in thestar wheel 145. The cam 140 is pinned by means of a stud 147 or thelike, to a spool like member 148 rotatably.

mounted on sleeve 135. Arranged on the sleeve 135 above the ball bearing132 and having a flange 149 engageable with the upper race thereof is acam 150 substantially similar to the cam 140 which is in operativerelationship to a star wheel 151 substantially similar to the star wheel145. The cam 150' is pinned to a spool like member 148'. similar tospool 148 by means of a stud 147' or the like.

It may be noted at this point that, in" the operation of the device, theshaft 50' carries with it'the worm 138 and the sleeve 135, to which itis keyed by the member 139, the cams 140 and 150, and the spools 148 and148', the sleeve 120 remaining substantially fixed against rotation. Bymeans of this arrangement, the entire mechanism carried within thecasing 123 by theshaft 50, or the shaft itself, may be quickly andeasily replaced.

The spools 148 and 148' are adjustably connected together by thefollowing means; Referring now to Figs. 5 and 6, it will be seen thateach of the spools 148 and 148 comprises a hubportion 155 and a pair oflaterally extending annular flanges 156 and- 156', the flanges 156 ofthe two spools being in engagement with each other. The-flange 156 ofthe lowermost spool 155 has a Inrality of screw threaded apertures 156aw ile the flange 156 of theuppermost spool has a plurality of arcuateslots 157, the slots being in registry. with the apertures 156a andscrews 158 are threaded through the slots 157 into the apertures 156a ofthe lowermost spool with their heads normally engaging the flange 156 ofthe uppermost spool 155 so as to lock the two spools in substantiallyfixed relationship. Each of the flanges 156' is notched as at 160, thenotches being preferably V-sha-ped andarranged in diametrically oppositepairs on each flange and the notches of eachof the two flanges beingsubstantially in registry with each other.

It will be readily apparent that, in order to change the angularrelationship between the two spools 148 and 148, it is necessary merelyto loosen the screws 158 by means of a wrench or other suitable tool'and then insert a tool such as a screw driver or the like into thenotches 160 and pry the two spools into the desired angularrelationship. The screws 1581113) then be tightened up and the spools,together with the cams 140 and 150 which are pinned to the respectivespools will be substantially fixed relative to each other. By this meansthe cams and star wheels andthe film feeding mechanism controlledthereby may be adjusted in a perfect synchronism, so that the starwheels will rotate simultaneously and the film may be maintained taut atall times.

A plate 162 (Fig. 5) secured to the casing 123 by means of screws orother suitable means is provided, whereby access may be had totheinterior of the casing 123 for making the adjustment just describedand for other purposes.

The star wheels 145 and 151 may be of any suitable type, but arepreferably of an improved design best shown in Figs. 10 and 11. Each ofthe star wheels compnises a shaft 165 with a screw threaded bore 164 inone end thereof and having preferably integral therewith hollow radialarms 166. Rotatably arranged in each of the arms 166 is a roller bearingmember 167, each of which, best shown in Fig. 11, is provided with ashoulder 168 abutting against the end of its cooperating radial arm 166.An annular groove 169 is formed on each of the members 167 adjacent theinner extremity thereof and loosely engaging each of the grooves 169 ofthese members so as to permit rotation thereof is an an-- milar ring 170extending through a suitable aperture 173 formed on the face of the starwheel and is secured in position by means of a screw 175 threaded intobore 164 of the shaft 165 of the star wheel.

It will be obvious that the members 167, being rotatable, reduce thefriction to a minimum in their contact with the cam. Furthermore, whenthe members 167 become worn after long usage, it merely becomesnecessary to remove them from the star wheel by loosening the screw 17 5and withdrawing the ring 170 which secures them and then replacing theworn out pins with new ones. This obviously represents a considerablesaving over star wheels which must be entirely replaced when their camengaging members become worn.

Meshing with the worm 138 (Fig. 3) is a worm wheel 180 secured on ashaft 181 which is rotatably mounted in the casing 123. Se-

cured to the other end of the shaft 181 outside of the casing 123 (Figs.1 and 2) is a feed sprocket drum 183 which is aligned'with the tatablymountedon an arm 186 which is carried by a bracket 187 mounted on a wallof spring (not shown) is provided for retainin this lever in its extremeposition. A knurle' knob 188 coaxial with the r llers 185 is providedfor adjusting these r llers in relation to the sprocket drum 183. Suchan arrangement for mounting the sprocket drums and rollers will bereadily apparent to one skilled in the art and it is not considerednecessary to show the same in detail. Reference may again be made to thecopending application above noted.

The star wheels 145 and 151 (Fig. 4) are mounted on shafts 190 and 190'which are journaled in sleeves 192 disposed in the casing 123 and havesecured to their opposite ends outside the casing 123 sprocket drums 191and 191. Cooperating with the sprocket drum 191 (Figs. 1 and 2) is apair of grooved rollers 193 rotatably mounted on a bracket 195 which ispivoted to the casing 123 as at 196. A knurled knob 198 is provided formanipulating the rollers 193 about the pivot 196 and a spring (notshown) is provided for maintainin the bracket 195 in its extremepositions a out its pivot 196. Similarly, a pair of grooved rollers 199cooperate with the sprocket drum 191', the rollers 199 being rotatablycarriedby a bracket 200 which is pivoted to the casing 123 as at 201:The arrangement of the grooved rollers 199 is substantially similar tothat of the rollers 193, a knurled knob 202 being providedformanipulating the bracket 200. j

A rectangular stripper plate 205 having a blade portion 206 adapted toengage the sprocket drum 191' for stripping film therefrom is pivotallysecured to the casing 123 as at 207. A screw 208 engageable in a slot209 formedin the stripper plate 205 is provided .for adjustingthe'stripper in fixed position.

A drum 210 aligned with the sprocket drum 191 is rotatably carried by abracket 211 t which is secured to the lens holder'25.

Cooperating with thedrum 210 is a pair of flat rollers 212 pivotallymounted on a bracket 213 which is secured to tl" casing 123 in a mannersimilar to the grooved rollers previously described. The rollers 212 maybe manipulated about their pivot 214 by means of a knurled knob 215. Ahelical spring-216 se-.

cured to the casing 123 by screws 217 or other suitable means isprovided for maintaining a tension on the arm 213 carrying the rollers212.

The function ofthe drum 210 and rollers 212 is as follows: It .isimpossible for the length of film between sprocket drums 191 and 191 toremain absolutely fixed, inasmuch as patches in the film will cause aconstant variation. However, once the film has beenarranged taut betweendrum 210 and sprocket drum 191', the rollers 212 will keep it so, due totheir resilient mounting, whereby they will maintain the film tightlyover the drum 210;

Secured to the inside of the wall 15 of the casing 10 (Figs. 1 and 2)isa bracket 220 having a slot therein in which is slidable a plate 221.The plate 221 is so arranged as to be slidable across an aperture 223 ofa masking plate 225 secured to the lens housing.

25, the aperture 223 being in registry with a source of light (notshown) and with the lenses contained in the housing 25. A suitableaperture is provided in the plate 221 for a pin. 227 whereby the plate221 may be adjusted in various positions with respect to the aperture223. The object of this arrangement is to mask out the sound line of atalking film which is being projected upon a screen. If the sound linewere not masked out, a wavy line of light would be projected on thescreen alongside of the picture. When, however, an ordinary film withoutsound is being projected, the plate 221 may be withdrawn to the side ofthe aperture 223 and the entire width of the film may thus be projected. It will be noted that the plate 221 lies in precisely the sameplane as the aperture plate 225, with the result that a sharp focus ismaintained on all sides of the picture being projected.

The casing 123 is slidably journaled on a pair of vertically disposedpins 230 and 231 (Figs. 4 and 5) and maybe raised and lowered by meanscomprising a lever 233 which is secured to a shaft 234 rotatablyjournaled in the wall 13 of the casing 10. The shaft 234 carriesadjacent its inner extremity a crank 235 on the free end of which isrotatably journaled a cylindrical bearin member 236. The bearing member236 is slidably disposed in a groove'237 formed in the outer wall of thecasing 123.

It will be readily apparent that rotation of the lever 233 about itspivot 234' results in vertical movement of the casin 123 and all oftheparts carried thereby, wlth the result that the picture of the filmcarried by the various sprocket drums may be properly centered or maskedwith respect to the aperture plate 225, thus preventing proper image onthe screen.

Inasmuch as the casing 123 and the parts carried thereby aresubstantially centered within the casing 10 when the lever 233 is in asubstantially vertical plane, a bracket 240 is secured to side wall 13of the casing 10 projecting outwardly to serve as a stop for the lever233. By this means, when it is desired to have access to any of theparts within the casing 10, it is only necessary to move the lever 233about its pivot until it abuts against the stop 240, and the parts arethen disposed in a most advantageous position for threading the film forsound pictures.

The operation of the apparatus described above Will, it is believed, beclear from what has gone before. A reel containing the film which it isdesired to project is arranged on thebracket 20 and the film is fedbetween the rollers 21, through the slot 22 in the top wall of thecasing 10, is 100 ed around a guide roller 240 (see Fig. 1), is fedbetween the feed sprocket drum 183 and its cooperating rollers 185,between the sprocket drum 191 and its cooperating rollers 193, betweenthe drum 210 and its cooperating rollers 212, between the sprocket drum191 and its cooperatingrollers 199, between the take-up sprocket drum 81and its cooperating rollers 85, around the roller 95 mounted on the arm93, and on out of the casing 10 through the slot 96, as clearly shown inFig. 1. The film is so arranged as to be substantially taut between thefeed sprocket drums 191 and 191' and is so maintained by the rollers 212cooperating with drum 210, in order that the picture behind the apertureplate which is being projected upon the screen may lie in substantiallya single plane and the image on the screen may therefore be perfectlyclear and without fuzziness.

After the film is arranged as shown, the

' arm 87 carrying the rollers 85 is rotated to its limit in a counterclockwise direction (Fig. 1) so as to gauge or measure a loop 97 offixedlength between the feed sprocket and the take-up sprocket drum 81, inthe manner described above, in order that the length of film between thepicture projecting aperture and the sound reproducing mechanism may befixed and perfect synchronism of sound and picture may be obtained.Adjustment of this length of film may be obtained by means of the'screw92 and arm 95. The plate 221 is adjusted over the aperture 223 in themasking plate 225 according to whether or not a sound film is beingprojected.

It is important to note that the film feeding sprockets are mounted onthe casing 123 and are absolutely fixed in longitudinal spaced relationto each other, being carried by the casing when the same is moved by thelever.

233 and parts controlled thereby for masking the picture on the screen.Hence, the length of film between the projection apparatus and the soundreproducing mechanism remains fixed at all times regardless of themasking operation, and the film passing before the source of lightremains taut at all times, so that a sharp image is projected. Further-.

-more, the casing 10 and all of the apparatus carried thereby constitutea unit and may be pivoted as a unit about the shaft without interruptingthe operation of the device, by

, means of the adjustable connection between casing 10 and gear box 37The arrangement drum 191" of the motion transmitting gearin with thecasings 37 and 52 efiects economy 0 space and enables such gears to becontinually bathed in oil, thus reducing noise and wear.

Furthermore, the arrangement of the film feeding actuating mechanismwithin the easing 123 is extremely advantageous inasmuch as all of theparts carried by the shaft may be removed substantially as a unit or anyelement thereof quickly replaced or repaired. If desired, the entireshaft 50 above the coupling 54 may be removed together with all theparts carried thereby and a similar unit sub stituted in a very shortperiod of time, so that the apparatus need not remain out of operationwhile repairs or replacements are being made.

As described above, the shutter may be adjusted by means of themanipulating member 101 and the parts controlled thereby and suchadjustment may, if desired, be made while the apparatus is in operation.means of the adjustable arrangement of the cams described above, thestar wheels 145 and 151 and the sprocket drums actuated thereby, maybemade to rotate absolutely simultaneously, thus maintaining the filmtaut at all times between the drums 191 and 191.

It will be readily understood of course, that when the apparatus is inoperation the film feed sprocket drum 183, being geared directly to theworm 138, will be rotated continuously, thus maintaining a loop of filmabove the sprocket drum 191, while the s rocket drums 191 and 191',being operate by the star wheels, will be rotated intermittently. The

Also, by

film takeup sprocket drum 81, being geared directly to the worm 7 5,will also be rotated continuously.

lln the claims, ting means will be used to indicate such mechanism asthat housed within the casings 52 and 37; while the term motion converting mechanism will refer to such elements as the cams.

Having thus described my invention, it is obvious that variousimmaterial modifications may be made in the same without departing fromthe spirit of my invention; hence, I do not w1sh to be understood aslimiting myself to the exact form, construction, arrangement, andcombination of parts herein shown and described or uses mentioned.

the term motion transmit- What I claim as new and desire to secure byLetters Patent is:

1. In apparatus of the class described, a

shaft, a pair of cams carried by said shaft, intermittent film feedingmeans comprising a 7 shaft, a pair of cams carried by said shaft,

intermittent feeding means comprising a my name this 19th da of A ril A.D. Adm p pair of rotatablemembers operated by said cams, and meanssecuring said cams together and providing relative angular adjustmentcomprising a pair of annular members secured respectively to said camsand adjustably secured to each other.

4. In apparatus of the class described, a

shaft, a pan of cams carried by said shaft, intermittent filmfeedingmeans operated b said cams, and means arranged on said sha between saidcams; and providing relative angular adjustment of said cams.

5. In apparatus of the class described, a shaft, a sleeve arranged onsaid shaft, and a pair of cams arranged on said sleeve in fixedlongitudinal relation to eachother for rotation with said shaft, saidsleeve and cams being removable as a unit from said shaft.

6. In apparatus of the class described, a shaft, a sleeve mounted onsaid shaft, a pair of cams arran ed on said sleeve for rotation withsaid sha and a pair of annular members arranged on said sleeve andsecured respectively to said cams and adjustably secured together, saidsleeve, cams and annular members bemg removable as a unit from saidshaft.

In witness'whereof, I hereunto subscribe 1929. n E. emmoian.

